Drill-lubricating pump



Get 2 1923.

J. J. THACHER- DRILL LUBRICATING PUMP Filed May 5, 1921 r r s. amount, or wn'rnnnsrrr '5' a or YORK,

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Application one any a, near. semi no. tamer.

To all'wlwmz't'may concern:

Be it known that 1, JOHN J. m citizen of the United States, residing at Wethersfield,in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Drill- Lubricating Pumps, of which the following is a s ification.

Th1s invention relates to metal workin machines and particularl to an im w means for supplying a In riwnt to t e tool or tools thereof.

The primary object of the invention is to provide a lubricating\ pump and improved means for operating t e same in synchronism with the tooling operation whereby a lubricant. is automatically supplied to the tools upon the relative approach of the tools and work.

More specifically it is an object of the invention t provide a lubricating pum in combination with a drilling machine an u? an operative connection between, the pump-and drill spindle whereby upon the feeding of the drill into the work the pump is automatically operated to supply a quantity of lubricant to the drill.

With the above and other objects in view my invention cousins in the eatures oi construction and operation set forth in the following specification and illustr in the accompan ing drawing. In such drawing annexed ereto and forming a part of this specification, I have shown my invention as embodied in a center drillin machine but it will we understood that to invention can be otherwise embodied and that dill the drawing is not to be construed'as definview taken on the line 3-3 of Fig. '2.

Fig. 4 is an enlarged detail view partially in longitudinal section.

In drilling and other metal cutting ma-- chines it is essential that the tools be properly supplied with a lubricant during the tooling o oration, it being unnecessary, however, t at such lubricant should flow continuously over the is while the same are inoperative The present invention accordingly provides a lubricating pump in connection with a tool suprt or supports and syn chronously operated therewith in a manner to cause a flow of lubricant over thetool or tools during the feedi toward the work. In t e drawing I have illustra thepump piston as being positively connec' to a drill spindle operating mechanism in a manner to operate the piston on a suction stroke durin the rearward movement of the spindles an on a compression or oil feeding stroke lduring the forward or feeding movement of the spindles. The specific details illustrated in the draw ing Wlll now be described.

The bed of a center drilling machine is illustrated at 1 on which are mounted drill supporting heads 2 and 3, each head having a motor 4 mounted thereon for rotating the drill spindles. The head 3 is adapted to be adjusted along the ways 5 of the bed and to be clam ed in adjusted position by means of a -c amping handle 6. Longitudinally slidably mounted within each head is a drill spindle 7, each suprting a drill 8. Means comprising a met) on each spindle and a PlIllOIl 10 is ada ted to feed t e spindles longitudinally. A andle 11 operatively connecged to a shaft 12 supportin the pinion 0 in the head 2 is adapts to be operated to feed the spindle lon'tudinall An arm 13 secured to the she Y 12 at t e opposite side of the head is operatively connected by a link it to an arm 15 secured to a shaft on which is mounted a pinion 16 meshing with the pinion 10 in the head 3. By this means it will be seen that movement of the handle ll in one direction is adapted to simultaneously teed both spindles forwardly and movement thereof in the op osite direction is ads to feed the spin les rearwardly. I 17 iustrates a pair of work supporting members adapted to su port a piece'of work W between the dril spindles 7. A hand clam l7 pivoted on one of the members is adapts to assist in supporting small stock.

An oil reservoir 18 is provided beneath the bed 1 and a ump 19 is adapted to force- 'oil therefrom t rou h conduits 20 and 21 to the drills in the rill spindles. ile l have illustrated the ump cylinder as formed integrally with t e reservoir, it will movement thereof hit lea

lid

be madily'understood'that the same may be formed and positioned in any desirable manto pass- -through a check valve 22 into the' pump cylinder and thence through a check valve 23 into the conduits and 21, the oil circulation being illustrated by arrows.

lltl) (iii The um iston 24L is operatively connected tc .t e drill spindles throu h the mechanism heretofore described, inc uding the link It connected to one end 25 of an arm 26 pivoted at 27 and having its other end connected to the piston rod 28. It will now be seen that movement of the handle ii. in a direction to move the spindles rearwardly will operate to move the iston out wardly to draw a charge of or into the pump and movement thereof in the opposite direction will operate to move the piston inwardly to discharge oil therefrom through 1 the conduits to the drills at the oint of their. engagement with the work. e hair it is 'adjustably connected to the arm 15 at 15 whereby to permit the adjustment of the head 3 heretofore described. By means of such adjustment the machine may be set to operate on work of varying lengths.

What I claim :v

I. In a machine tool, the combination of a tool support, means for en porting a piece of work, means for causing relative rotation between the tool and work, means for causing'a relative feeding movement between the tool and work, a lubricating pump, an oil conduit lending from the pump to the tool, and amp operating means controlled-b the re ative feeding movement between t tool and work whereb upon relative a preaching movement tween the tool an work the pump will be operated to discharge a quantity of oil therefrom through the conduit to the tool.

2. In a machine tool, the combination of a tool support, means for supporting a piece of work, means for causing relative rotation mtween the tool and work, means for causing a relative feeding movement between the tool and work, a lubricatin pump of the piston type, an oil conduit ending from the pumpto the tool, and means for operating the pump piston synchronously with the toolin operation w ereby upon relative approac ing movement between the tool and worls the pump iston will be moved in a direction to disc arge oil from the pump through the conduit to the tool.

3. In a machine tool, the combination of a tool support, means for supporting a piece of work, means for causing relative rotation between the tool and worlr, means for causing a relative ieedin movement between the tool and work, a lubricating pump of the piston type, an oil conduit leading from the pump to the tool, and means for operat- 3 and 4 the accuses ing the pump piston synchronously with the operation whereby upon relative separating movement between the tool and work the pumgrpiston will be moved in one direction to aw a charge of oil into the pump and upon relative a preaching movement between the tool an work the pump piston will be moved in the opposite irection to discharge oil therefrom t rough the conduit to the tool.

4. In a drilling machine, the combination of a spindle, means for rotating the s indle, means {for moving the spindle lon 'tu inally toward and from a piece of wor a lubricatin pump of the piston type, an oil conduit ading from the pump to the spindle, and means operatively connecting the spindle to the pump piston whereby on rearward movement of the spindle the piston will be moved in one direction to draw a charge of .oil into the pump and upon forward movement of the s indle the piston will be moved in the opposite direction to discha-r e oil therefrom through the conduit to the spindle 5. In a drilling machine, the combination of a spindle, means for rotating the s indie, means for moving the spindle longitu inally toward and from a piece of work, a lubricati pump of? the piston type, an oil conduit ending from the pump to the spindle, and a posit ve operative connection between the spindle and the pump piston whereby rearward movement of the spindle operates to move the piston in one direction to draw a charge of oil into the pump and forward movement of the'spindle operates to move ltd" the piston in the opposite direction to disa 6. In a drilling machine, the combination of a spindle, means for rotating the s indle, means for moving the spindle longitu inally toward and from a piece of 'worlt, a lubricat mg pump of the piston type, an oil conduit leading from the pump tothe spindle, and an operative connection independent of the spindle between the spindle moving means and the pump piston whereby movement of the said means to move the spindle rearwardly operates to move the amp piston in one direction to-draw a charge of oil into the pump and movement of such means in the opposite directionoperates to move the piston in the opposite direction to discharge oil therefrom through the conduit to the spindle.

7. In a center drilling machine, the combination of a bed, a pair of drillsupporting heads mounted thereon. one of such heads being longitudinally adjustable on the bed, a drill spindle slidably mounted in each head, means operatively' connected to the spindles for simnltaneousl moving the same longitudinally tower and from a hoods mom moooos ieoe of Work supporfiedl between the spingles, o lubricating pump of the piston-typo, an oil coxfluii' leading from. tho pump so each spindle, and on operofizivo oonmection hefiweon am of @ho spinfloa the pump piston Wherebv upon reowwomfi movomonfi; of

'the spindifies, t to pump pision Wm be moved;

in one direction {so draw o chmgo ofi 05 im to the ump upon 'fowwo rdi movomon i of mo spmdlos vho Wm ho wovoo? in hfiho opposifio "a (iisoho oii fiyhoyo from through co hos;

8. In a some? co bination of g reawwmfily V m om dimes ,oinofilion of o boa o pow of dril opposito dirocfifnon "wiH-opmte to move tho pisfton in the opposite direction to discharge oil therefrom through the conduits to tho spindles,

9, In o combo? drilling machinei the coming hoods mounte& thoroon, one 0 such; hoods being longitudinoll adjustable on the bodha drill spindio sli ably mounted in ooch hood, means for moving each spindle longiwolinony toward and from a, piece of Work supported Tootwoen tho spindlos, a link oommotimg such moons iufiricming pump oi? bho goistbon typo on oifl conduio ieodim v {sh o to of who spindles, moi nooi ion c mprising o pivoted o iho pump pistom fslmo in o'omocttioio rrdlly will oporeoico dirooaiom rho the {pump moi movem. v I aiizo ilim-otiom Wm opw mom pisibon in who opposite-5 'n oozion oil @hemfromtbrough JQHN J, TEACHER. 

